Pre Drilled Heatsink for boards

What size Heatsink (Read first post before voting)

  • 1 board per heatsink. Heatsinks can be connected together with L channel.

    Votes: 32 54.2%

  • 2 board per heatsink

    Votes: 14 23.7%

  • 3 board per heatsink

    Votes: 13 22.0%
  • Total voters
    59
robincnn

robincnn

Well-Known Member
Next on the DIY menu.
boards boards boards
upload_2016-11-5_19-16-45.png

Thinking of getting some pre drilled heastinks for the boards. Will take a few weeks.
upload_2016-11-5_19-26-53.png
Boards are about 174mm wide. This profile is about 200mm. Should be good for up to 80 watts.

Option 1:
1 board per heatsink. You can connect 2 or 3 or more of these heatsinks together using an Aluminum L channel. Heatsinks will be pre drilled but L channel will need drilling.

Option 2:
2 board per heatsink. No L channel aluminum required.
To connect 4 boards you can connect 2 of these heatsinks together using an Aluminum L channel.

Option 3:
3 board per heatsink. No L channel aluminum required.

What are these boards
https://www.rollitup.org/t/diy-passive-cooling-with-pin-heatsinks-sst120-and-sst140.906729/page-33#post-13100993

@Stephenj37826
 
sixstring2112

sixstring2112

Well-Known Member
Stephenj37826 said:
Not required. Not really sure it would help honestly. The heat is so spread out. Totally different than cobs. As @robincnn pointed out they will run up to 40 watts with no heat sink at all passive lol.
Click to expand...
So a big ass thermal pad behind those boards on a decent heatsink should be good to 100 to 120w easy?
Still cant figure out how these run 3 or 4 boards off a single driver if they are 100v boards? What am i missing stephen?
 
sixstring2112

sixstring2112

Well-Known Member
Maybe a quick chart of how many boards oer driver with just the 4 or 5 most common meanwells would help us understand?
 
sixstring2112

sixstring2112

Well-Known Member
Stephenj37826 said:
To recap
150 watts. HLG 120H-1400. Minimum 1 board
240 watts . HLG 240H-2100 Minimum 2 boards
320 watts. HLG 320H- 2800 Minimum 3 boards
Click to expand...
That helps some,maybe I'll figure it out after they catch on and people start showing what they configure. Still confused as hell as of now.dont we normally use a different type driver for parallel wiring? I mean i have both types now and still no clue how i would run 4 of those boards @ 400w lol
 
Stephenj37826

Stephenj37826

Well-Known Member
sixstring2112 said:
That helps some,maybe I'll figure it out after they catch on and people start showing what they configure. Still confused as hell as of now.dont we normally use a different type driver for parallel wiring? I mean i have both types now and still no clue how i would run 4 of those boards @ 400w lol
Click to expand...

Take any of these drivers. Add as many boards as you want. It will divide the wattage among them automatically.

Example

HLG 320H-2800. 3 boards is ~107 watts per board. 4 boards is 80 watts per board. 5 boards would be 64 watts per board. 6 boards would be ~53 watts per board. Do you understand? Kinda like a cob that is ~100 volts. Parallel is easy.

EXAMPLE 2.

HLG 240H-2100

2 boards will be 120 watts per board.
3 boards would be 80 watts per board.
4 boards would be 60 watts per board.
5 boards would be 48 watts per board.

The key is select a driver that has the voltage of one board ~ 100-108 and you can add as many as you like and it will divide the wattage amongst them.
 
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